Advantage: By moving around inside the cell, chloroplast can reorient itself in order to expose to the maximum of the sunlight necessary for the photosynthesis.
Disadvantage: Movement <span>around</span> of the chloroplast inside of the cell requires energy. The cell can produce energy, but the energy is needed for other processes of the cell.
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
Cytoplasm maintains the internal pressure in the cell.
Im pretty sure its the genus